scholarly journals Evaluation of Cracking Causes of AlSi5Cu3 Alloy Castings

2014 ◽  
Vol 59 (3) ◽  
pp. 1089-1092 ◽  
Author(s):  
Š. Eperješi ◽  
M. Matvija ◽  
ľ. Eperješi ◽  
M. Vojtko
Keyword(s):  
Automotive Industry ◽  
Pressure Casting ◽  
Operating Life ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Heat Treated ◽  
Low Pressure Casting ◽  
Alloy Castings ◽  
Pressure Die Casting

Abstract Recently, the castings made from aluminum-silicon alloys by pressure die casting are increasingly used in the automotive industry. In practice, on these castings are high demands, mainly demands on quality of their structure, operating life and safety ensuring of their utilization. The AlSi5Cu3 alloy castings are widely used for production of car components. After the prescribed tests, the cracks and low mechanical properties have been identified for several castings of this alloy, which were produced by low pressure casting into a metal mould and subsequent they were heat treated. Therefore, analyses of the castings were realized to determine the causes of these defects. Evaluation of structure of the AlSi5Cu3 alloy and causes of failure were the subjects of investigation presented in this article.

Correlation between Alloying Elements and Aging Parameters and Hardness and Machinability of Aluminum-Silicon Alloys Using Minitab Software

2015 ◽  
Vol 1101 ◽  
pp. 217-224
Author(s):  
Mahmoud M. Tash ◽  
Khaled A. Abuhasel ◽  
Saleh A. Alkahtani
Keyword(s):  
Artificial Aging ◽  
Drilling Force ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Alloying Additions ◽  
Surface Fraction ◽  
Solution Treated ◽  
Heat Treated ◽  
Si Content ◽  
Mg Content

The present study was undertaken to investigate the effect of alloying additions and aging parameters (time and temperature) on the hardness and machinability of Al-Si alloys. Hardness, drilling force and moment and number of holes drilled/tool measurements were carried out on specimens prepared from grain refined, Sr modified and heat treated Al-Si alloys. Aging treatments were carried out for the as solution treated (SHT) specimens (after quenching in warm water). The specimens were aged at different conditions; artificial aging was carried out at 180˚C, 200 ˚C and 220˚C for 2 and 5 h. Hardness, drilling force and moment and number of holes drilled/tool as a function of different metallurgical parameters (i.e. %Si content, %Mg content, heat treatment parameters (time and temperature), Cu-intermetallics surface fraction and Fe-intermetallic surface fractions) are analyzed to acquire an understanding of the effects of these variables and their interactions on the hardness and machinability of heat treated Al-Si alloys.

Solidification Modeling and Porosity Control in Aluminum Alloy Castings

1999 ◽  
Author(s):  
Jeffrey R. Shenefelt ◽  
Rogelio Luck ◽  
John T. Berry ◽  
Robert P. Taylor
Keyword(s):  
Aluminum Alloy ◽  
Boundary Conditions ◽  
Hydrogen Evolution ◽  
Thermal Environment ◽  
Shrinkage Porosity ◽  
Commercial Software ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Software Packages ◽  
Alloy Castings

Abstract Commercial software packages enable the thermal environment of shaped castings to be determined provided the boundary conditions are well understood. Criteria functions (CF’s) based on the thermal environment provide a means for estimating shrinkage porosity within a casting. However, the CF’s do not account for gas driven porosity forming within the casting. This paper reviews the CF’s and additional approaches to account for hydrogen evolution in aluminum-copper and aluminum-silicon alloys.

RHEINFELDEN CASTASIL-37

Alloy Digest ◽  
2021 ◽  
Vol 70 (10) ◽  
Keyword(s):  
High Pressure ◽  
Die Casting ◽  
Heat Treating ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Structural Applications ◽  
Die Castings ◽  
Pressure Die Casting ◽  
Cast Condition ◽  
Aluminum Silicon

Abstract Rheinfelden Castasil-37 (AlSi9MnMoZr) is an aluminum-silicon-manganese-molybdenum-zirconium high pressure die casting (HPDC) alloy. It was developed by Rheinfelden Alloys GmbH for the production of large and complex high pressure die castings for automotive structural applications. This alloy is used in the as-cast condition, and exhibits good mechanical properties, especially elongation, which are superior to those of conventional aluminum-silicon alloys. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as casting, heat treating, and joining. Filing Code: Al-481. Producer or source: Rheinfelden Alloys GmbH & Co. KG.

Influence of Nanodispersions on Properties and Microstructure Features of Cast and T6 Heat-Treated Al Si Hypoeutectic Alloys

2012 ◽  
Vol 192-193 ◽  
pp. 76-82
Author(s):  
Iman El Mahallawi ◽  
Hoda Abdelkader ◽  
Laila Shehata ◽  
Asmaa Amer ◽  
Joachim Mayer ◽  
...  
Keyword(s):  
Lamellar Spacing ◽  
Light Metal ◽  
Nano Particles ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Mechanical Stirring ◽  
Heat Treated ◽  
Cast Alloys ◽  
Semi Solid ◽  
Function Relationship

Cast light metal alloys have retained their importance and unique characteristics as first candidates when cost-function relationship is considered. Hypoeutectic aluminum silicon alloys as (A356) exhibit several specific and interesting properties that qualify them to be used in many automotive and aeronautical applications. Evidence of significant enhancement in strength in the properties of Al-Si cast alloys by incorporating nano-particles have been recently presented. The present study aims at developing nano-dispersed Al-Si alloys with suitable casting methods that assure the dispersion of the nano-particles. In this work a number of cast samples of A356 were prepared by rheo-casting in a specially designed and built furnace unit allowing for the addition of the nano-particles into the molten Al-Si alloy in the semi-solid state with mechanical stirring. The microstructural features and the mechanical properties of the cast and T6 heat treated samples were investigated. The results obtained in this work showed enhancement in the mechanical strength of the nano-dispersed alloys, accompanied by significant increase in the elongation percentage, supported by evidence of refined dendrite arms length, and inter-lamellar spacing.

scholarly journals DEVELOPMENT OF HEAT-INSULATING COATINGS FOR DIE MOULD OF LOW-PRESSURE CASTING

2017 ◽  
pp. 26-29
Author(s):  
A. A. Kosovich ◽  
T. R. Gilmanshina ◽  
T. A. Bogdanova ◽  
E. G. Partyko ◽  
D. Yu. Kritsky
Keyword(s):  
Computer Simulation ◽  
Low Pressure ◽  
Pressure Casting ◽  
Light Alloy ◽  
Pressure Method ◽  
Low Pressure Casting ◽  
Wheel Casting

Influence of heat-insulating release coatings on quality of light-alloy wheels is considered. Comparison of properties of the developed compositions and foreign analogues is carried out. Computer simulation of wheel casting by low pressure method in the painted die mould is executed. Results of approbation of the developed composition under the conditions of existing industry are presented. 

scholarly journals The Influence of Remelting on the Properties of AlSi6Cu4 Alloy Modified by Antimony

2012 ◽  
Vol 12 (1) ◽  
pp. 81-86 ◽  
Author(s):  
D. Medlen ◽  
D. Bolibruchova
Keyword(s):  
Mechanical Properties ◽  
Automotive Industry ◽  
Molten Aluminum ◽  
Phase Particle ◽  
Gas Content ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Low Weight ◽  
Cast Products ◽  
Aluminum Silicon

The Influence of Remelting on the Properties of AlSi6Cu4 Alloy Modified by Antimony The paper deals with the problem of multiple remelting influence on AlSi6Cu4 alloy modified by antimony on chosen mechanical characteristics, microstructure and gas content. This foundry alloy is used mostly in automotive industry. Foundry Aluminum-Silicon alloys are also used in number of industrial weight sensitive applications because of their low weight and very good castability and good mechanical properties. Modifiers are usually added to molten aluminum-silicon alloys to refine the eutectic phase particle shape and improve the mechanical properties of the final cast products and Al-Si alloys cast properties.

scholarly journals Lost Cores for High-Pressure Die Casting

2014 ◽  
Vol 14 (2) ◽  
pp. 101-104 ◽  
Author(s):  
P. Jelínek ◽  
E. Adámková
Keyword(s):  
High Pressure ◽  
Automobile Industry ◽  
Die Casting ◽  
Pressure Casting ◽  
Important Criterion ◽  
Solubility In Water ◽  
Grain Surface ◽  
Pressure Die Casting ◽  
The Given

Abstract Development of salt cores prepared by high-pressure squeezing and shooting with inorganic binders has shown a high potential of the given technology even for high-pressure casting of castings. Strength, surface quality of achieved castings, and solubility in water become a decisive criterion. The shape and quality of grain surface particularly of NaCl - cooking salts that can be well applied without anticaking additives has shown to be an important criterion. Thus the salt cores technology can cover increasingly growing demands for casting complexity especially for the automobile industry.

REYNOLDS 390 and A390

Alloy Digest ◽  
1971 ◽  
Vol 20 (8) ◽  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
High Hardness ◽  
Heat Treating ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Temperature Performance

Abstract REYNOLDS 390 and A390 are hypereutectic aluminum-silicon alloys having excellent wear resistance coupled with good mechanical properties, high hardness, and low coefficients of expansion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, and machining. Filing Code: Al-203. Producer or source: Reynolds Metals Company.

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